This is happen when I press
Ctrl + S in your VIM. Cause VIM do not response any input. Means, VIM do not print (but still save) anything you typed. Even when you try to kill them (sending kill signal to VIM).
You can get back your VIM into “normal” condition by pressing
Ctrl + Q. And viola.. VIM now print everything you typed before.
The reason is, as Michael Mrozek explained, pressing
Ctrl + S will trigger
xoff that will disable screen painting. This screen painting will be reenabled by pressing
Ctrl + Q (trigger
Thank’s to Stackoverflow and all.